@taimoorkhan
&
@Blindmanwatching
better install cng setup from ur nearest + gud repute conversion center, dont travell long way just to install cng, cos in future it needs tune ups which become real PIA if workshop is at long distance.
i recommend install cng kit original italian landi renzo, not other brand, cos its parts are easily available and easy to understand by mechanics, do install 4th generation lambda control sysems, this is a gud thing to get power from a car, effects on pick + top speed and milleage, for adv & emu, give option to the installer but ur concerns should be like, no rmp drops, no car stalling on sudden breakes at 80km/hr or 100 km/hr to 0km/hr, top speed shouldn't be bound, like car wont go avobe 140 or 150, pick would be nearest to petrol, simple car should climb all the mountain area (assuming u both in isb) with full passenger (like to peer-sohava) without putting first gear, thats a ultimate test, maximum depends on ur driving style, but still if car is supporting and i hope u guyz are gud drivers than me, u can do it easily, at about 4 or 5 places while going peer-sohava u have to put 1st gear, otherwise car should climb it with power on cng with 5 persons on board.
it might be lengthy but its all my few observations and cautions before i convert my gli to cng,
Regards